Hunter



A; HUNTER. I Sepafating'and Concentrating Sulphurets. 4

No; 80,629. Patented Aug. 4, I868.

raga V L cites grates ANDREW HUNTER; OF SAN FRANCISCO, CALIFORNIA;

Letters Patent No. 80,629, dated August 4, 1868; ante d'atecl July 25, 1868.

aust re mean. it it time l tters amt ant making tart nf flge 5min.

TO ALL WHOM IT CONCERN:

Be it known that I, ANDREW HUNTER, of'the city and county of San Francisco, State of California, have invented a new and useful Improvement in Machines (heretofore invented by me) for Separating and Concen trating Sulphur-oils from ores, sands, or tailings, whether of gold, silver, or other metals, and for saving amalgam,

is suspended at any required height.

(a patent for which machine was granted me on the 23d day of May, 1865;) and I do hereby declare that the following is a full and exact description of same, reference being had to the accompanying drawings, and to the letters of referenceom-arked thereon.

Figure 1 is an end view of the machine.

Figures 2 and 3 are side views.

Figure l is a plan.

A A'is astout framework.

B is a table or trough of wood, having a downward inclination from rear to front, for a portion of its length,.

as shown by line a b, and is level, or;ncarly so, from b to d.

"D D are adjustable hangers, of steel or other proper material, by which the rearencl of table or trough B S is a shaft, with wheels or rollers R, or other suitable device, upon which the front end of the table or trough B rests andimoves. I

K is a shaft, provided with crank or eccentric, revolved by any known means giving a quick oscillatory or vibratory motion. v v Z is an eccentric-strap, constructed so that the space shall be filled by the eccentric, when in position at top of the strap, arresting for a moment the vibratory motion of the'table or trough B. When the eccentricis at the lower part of-the strap, there is room for play, so that the table or trough B may have the full vibratory motion.

X is a spring, against which the table or trough B strikes.- V V ,E is a small trough or hopper (with holes in the bottom) to receive the pulp and distribute it equally upon the table or trough B, and has a rocking motion given to it by red I, driven by crank on shaft S; l

' G is a smaller trough, supplied with water from pipe H, which drips slowly through small holes on to the table or trough B. l l

T is an inclined sieve, having a vibratory motion by means of rod or standard U and rod V, driven by ,a crank on shaft K. i V

W is a scraper, of rubber or other'su itable material, revolving on a shaft, for the purpose of removing the sands from the table or trough B. l i

' Operation. V g

The machinc being set in motion, the pulp or tailings is run into trough E, and isdistributed through the holes in the samo. The heavier particles, say sulphurets or metal, are precipitated upon the table or trough B, and being below the current, and free from, its influence, are forced over the upper end of the table or trough, by reason of this quick, oscillatory motion, and the concussion produced by the striking of the trough or table B against spring X, or its equivalent. The degree of co ucussion is regulated by-placing the spring X nearer to. or farther from the table or trough, by means of set-screws or other suitable device. The lighter or earthy or sandy particles are held in suspension by the water, anclpass down over the lower end of the table or trough B, assisted by scraper W, on to the sieve or screen '1. The floured or fine particlesof metal pass through into a proper receptacle, the sands and other coarse matter passing over the lower end. I

Having thus described my machine and its operation, what I claim as my invention, and desire to secure by Letters'Patent,isi 1 v 1. The formation of the trough or table B, with or without metallic lining, and alternately inclining and level, as shown by lines a 6 ol, substantially as described, and for the uses and purposes as set forth.

2. The combination, with the table or trough-B and-its adjustable hangers, of the cam-shaft and spring X,

under the arrangement described, whereby both the oscillatory motion and percussion of the said table are effected, for the purpose of separating the sulphurets and metals from the lighter'particles, as set forth.

3. The. eccentric-strap Z, in combination with the trough B and cam, or equivalent means, for imparting an oseillatorymovement to said trough, substantially as andfor the purposes set forth.

4. The combination, with the table 13 and mechanism for imparting to the same an oscillatory movement, of the rocking-trough E, arranged for operation substantially as and for the purposes set forth.

5. Thecombination, with the oscillatory table or trough B, of the rotary scraper W, made of India rubber or other, suitable material, substantially as set forth, and for the purposes specified.

6. The combination, with the table or trough B, of the inclined screen T, and mechanism .for imparting to the same a vibratory motion, under the arrangement and for operation as herein set forth.

7. The combination, with the oscillating trough and hanger, by which the rear end of the trough is held, of the wheels or rollers R, for supporting the front end of said trough, substantially as herein shown and described.

8. The combination of the table or trough B with eccentric-troughs E and G, hangers D D, spring X, wheels or rollers R, scraper W, and sieve T, substantially as described, and for the uses and purposes as hereinbefore set forth.

In testimony whereof,I have signed my name to this specification before two subscribing witnesses.

ANDREW HUNTER. Witnesses:

J QW. McKenzie, Cass. R. Bonn. 

